Validity, Reliability & Responsiveness of 'Shortened Disability Arm Shoulder Hand' (Quick DASH) Questionnaire in Measuring Functional Incapacity in Individuals with Upper Extremity Injuries

The (Quick DASH) Quick Disabilities of the Arm, Shoulder, and Hand questionnaire is considered one of the widely used questionnaires for assessing and evaluating the functional ability of the patients in terms of upper extremity diseases. This study is done to evaluate the reliability and responsiveness of the shortened Quick DASH questionnaire functional measures in health care. The study was a secondary databased, cross-sectional, longitudinal study of patients with upper extremity injuries. Reliability observed in the analysis by calculating an Intraclass Correlation Coefficient. Responsiveness observed in the analysis by calculating the Effect Size and Standard Response Mean. The Minimal Clinical Importance Difference (MCID) also observed in the review to assess responsiveness. Intraclass Correlation Coefficient observed in the study as a correlating factor between the physiotherapist and patient-perceived level of the overall condition of upper extremity disability. Results demonstrated the inconclusive test-retest reliability. In the research, the responsiveness measured as 0.01 as small 0.06 as moderate and 0.14 as large. The MCID was determined to 19 points. There was a strong correlation found between patient and therapist perception, the overall present condition of upper extremity disability with the ICC of 0.91.